412 citations · 3.1k across the 30 of their papers we have counts for
4 papers · 1 filter
Testing the No-Hair Theorem with Event Horizon Telescope Observations of Sagittarius A*
Avery E. Broderick, Tim Johannsen, Abraham Loeb +1
The advent of the Event Horizon Telescope (EHT), a millimeter-wave very-long baseline interferometric array, has enabled spatially-resolved studies of the sub-horizon-scale structu…
High-Angular-Resolution and High-Sensitivity Science Enabled by Beamformed ALMA
Vincent Fish, Walter Alef, James Anderson +66
An international consortium is presently constructing a beamformer for the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile that will be available as a facility instrum…
Inner Accretion Disk Edges in a Kerr-Like Spacetime
Tim Johannsen
According to the no-hair theorem, astrophysical black holes are uniquely described by the Kerr metric. In order to test this theorem with observations in either the electromagnetic…
Systematic Study of Event Horizons and Pathologies of Parametrically Deformed Kerr Spacetimes
Tim Johannsen
In general relativity, all black holes in vacuum are described by the Kerr metric, which has only two independent parameters: the mass and the spin. The unique dependence on these…